"White-Bellied Spider Monkeys: Masters of the Canopy"

Spider monkey


 Geographic Distribution and Habitat:


White-bellied spider monkeys, also known as white front or long-haired spider monkeys, are natives of Colombia, Ecuador, Venezuela, Peru and Brazil's northwestern and Montenean Amazonian forests.


The Amazon rainforest, which has existed for at least 55 million years, is hot and humid. Tens of thousands of plants, over 2 million insects, and over 2,000 species of insects make it one of the most biodiverse locations on Earth birds and mammals. It consists of lowland and montane forests, floodplains, bamboo and palm forests, and savannas. Although temperatures never exceed 90 F (33 C), it feels very hot and stuffy because the humidity is constant.


Size, Weight, and Lifespan

Male and female white-bellied spider monkeys vary slightly in body size and weight. Males are about 17–19 inches (42–50 cm) long, while females are about 13–23 inches (34–59 cm) long. Both males and females have tails that average 25–35 inches (65–90 cm) long—longer than their entire bodies. They weigh between 13 and twenty pounds (6–10 kg).


Spider monkeys have an average lifespan of 25 to 30 years in the wild and 40 years or longer in captivity. According to several published papers, females may live longer than males.


Adaptations of White-Bellied Spider Monkeys:


Adaptations in Limbs:


White-bellied spider monkeys have long, muscular and very strong limbs. Their shoulders are such that the arms can rotate completely. The elbows allow the arms to move forward and the large carpal tendons make their wrists extremely flexible. Their hands are long, thin and thumbless. Their four long fingers make a perfect hook to help swing on the branches. Their torso is small. All these features are perfectly compatible with the suspension mode of the monkey locomotion.


Tail Structure and Functionality:


Their long muscular tail is large at the base, thin at the tip, and capable of bending, twisting, and twisting. It is prehensile and tactile; the underside is bare, like the undersides of the hands and feet. Spider monkeys can use their tails to grasp and hold onto branches. In fact, their tails are strong enough to support their entire body weight and propel them forward while still moving. This also allows the monkeys to cling to a branch, their torso at a sharp angle, while they use their hands to eat.


Facial and Dental Features:


They have a narrow face with a small chin, a narrow snout, and large orbits in which almond-shaped brown eyes are set. Their ears resemble ours, and their cranium is spherical. Compared to the lower jaw, the upper palate is wider. The upper canines are long and curved (slightly shorter in females), sharp, and the incisor teeth are wide.


Fur Color Variations:


The lowland forest is home to white-bellied spider monkeys, who have creamy yellow fur on their abdomens and hind limbs and black fur on their backs.Those that live in the mountain forests are more varied in color.


Spider monkey daily Diet :


White-bellied spider monkeys spend 20 percent of their time feeding. They eat mainly fruits and seeds, along with leaves, buds, and flowers. Of the many trees they feed on, they favor four tree species: Ficus, Cecropia, Brusinum, and Virula. They prefer the sugar-rich, small-seeded fruits of Ficus and Cecropia trees; the seeds of fruits that grow on Brusinum trees; and the large, oily seeds of Virula fruit. In some places, they also eat fruits from palm trees and even angiosperms, such as Gustavia hexapetella, which has large white flowers.



Mineral licks (or saladeros), located in areas with broken layers of soil, provide the monkeys with nutrients and digestive enzymes found in the water or soil they eat.

Spider monkey


Behavior and Lifestyle



The majority of these water monkeys' time is spent in the canopy. They rarely come down to the ground. When they do, it is to drink water, eat dirt, cross a treeless area, or flee from an aggressive opponent.



In the forest canopy, white-bellied spider monkeys move freely between branches and can travel long distances quickly using a variety of speed modes. Their most common method of arboreal locomotion is brachiation (or arm swinging)—the monkey hangs from a branch, swings forward, and hooks onto the next branch with the other limb or tail. Another is forward swinging, in which the monkey hangs from the branch with both arms, swings its body, and lets go before quickly grabbing the next branch. Tail swinging is another form of locomotion—the monkey hangs by its tail as a mid-step between branches. They can remain stationary in this position to forage with both hands. Spider monkeys can also walk on branches using all four limbs or by standing on their hind limbs.

Spider monkey


Fun Facts


Did you know that "Atelius" means "imperfect" and that the reason naturalist Geoffrey Saint-Hilaire (1772–1844) gave the spider monkey genus such a 

name is because spider monkeys do not have thumbs?




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